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Related Concept Videos

Isothermal Processes01:21

Isothermal Processes

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A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
An ideal gas can also undergo isothermal expansion or compression.
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Mass Spectrometry: Isotope Effect01:13

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Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
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Isochoric and Isobaric Processes01:21

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A thermodynamic process that occurs at constant volume is called an isochoric process. According to the first law of thermodynamics, heat supplied or removed from the system is partially utilized to perform work and change the internal energy of the system. However, in an isochoric process, the volume remains constant. Hence, the work done by the system is zero. Therefore, the exchange of heat changes the internal energy of the system only. 
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Mass Spectrometry: Complex Analysis01:21

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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Tandem Mass Spectrometry01:21

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...
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Chemical Equilibria: Systematic Approach to Equilibrium Calculations01:21

Chemical Equilibria: Systematic Approach to Equilibrium Calculations

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Equilibrium calculations for systems involving multiple equilibria are often complex. For example, to calculate the solubility of a sparingly soluble salt in an aqueous solution in the presence of a common ion, one must consider all the equilibria in this solution. Calculations for these systems can be complicated and tedious, so a systematic approach with a series of steps is often helpful. The process is detailed below.
The first step is to identify all the chemical reactions involved, The...
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Mass balance of complementary metasomatic processes using isocon analysis.

Evgeniy N Kozlov1, Ekaterina N Fomina1

  • 1Geological Institute, Kola Science Centre of the Russian Academy of Sciences, Apatity 184209, Russia.

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Summary

This study presents a new mass balancing method to quantify element redistribution during metasomatism. The approach estimates mass proportions between source rocks and resulting metasomatic rocks, crucial for understanding geological complex formation.

Keywords:
CarbonatitesIsocon analysisMass balanceMetasomatism

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Area of Science:

  • Geochemistry
  • Petrology
  • Economic Geology

Background:

  • Metasomatic processes are key in forming geological complexes.
  • Understanding element redistribution is vital for geological resource exploration.
  • Previous methods lacked quantitative mass proportion estimation.

Purpose of the Study:

  • To develop a quantitative method for estimating element redistribution during simultaneous metasomatic processes.
  • To establish mass proportions between source rocks and metasomatic rocks.
  • To provide geological criteria for validating the method's results.

Main Methods:

  • Classical mass balancing using isocon analysis.
  • Development of a mathematical model for metasomatic mass proportion calculation.
  • Application of the method to geological profiles and case studies.

Main Results:

  • A novel method to calculate mass proportions between source and metasomatic rocks.
  • Defined applicability limits and interpretation guidelines for the method.
  • Demonstrated geological criteria for verifying model outcomes.

Conclusions:

  • The developed method accurately estimates mass proportions in metasomatic systems.
  • This approach enhances the understanding of element transport and rock alteration.
  • The study provides a robust tool for geological complex analysis and resource assessment.